Rowlock



'(No Model.)

J. W. Nom-Ross.

Rowlook.

Patented June 21,1881.

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UNITED STATES PATENT OFFICE.

JOSEPH W. NOROROSS, OF LOOKPORT, NEW YORK.

RowLooK.

SPECIFICATION forming part of Letters Patent No. 243,294, dated June 21, 1881.

Application led April 25, 1881. (No model.)

To all whom it may concern:

' Be it known that I, JosEPH W. NoRcRoss,

a citizen oftheUnited States, residing atLockport, in the county of Niagara and State ofNew York, have invented new and useful Improvements in Rowlocks, ot' which the following is a specification.

This invention consists in a bracket having in its under side a guide-recess, within which is confined a longitudinally-sliding bolt hav.- ing a bifurcated inner end, which embraces a circular groove in the lower end of the thole or lug pin of the rowlock; also, in the combination of the thole or lug pin arms extending laterally from the thole or lug pin, a swiveling support for the oar extending from the upper part of the thole-pin, and a cam-plate which is acted on bythe laterally-extending arms.

This invention is illustrated in the accompanying drawings, in which Figure l represents a plan or top view. Fig. 2 is a side view. The remaining figures are details, which will be referred to as the description progresses.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates a gunwale of a boat, to the edge ot' which is rmly secured the bracket B,in which is formed the socket for the thole or lug pin C. i

In the under surface of the bracket B is a recess which forms the guide for abolt, D, the inner end of which (see Fig. 3) is bifurcated and engages with a circular groove, a, in the inner end of the thole or lug pin, so as to keep the same down in its socket, while it does not interfere with its revolving motion. When the bolt is drawn back the thole or lug pin can be unshipped. In the example shown in the drawings the bolt D is made in the form of a spring, which retains its position by t'rictional contact; but an ordinary bolt may be used which is subjected to the action of a spring.

On the top ofthe bracket Bis secured a camplate, E, and from the thole or lug pin extend two arms, b b, which engage with the said camplate. When the oar trails or is turned inboard the arms b b drop into recesses c, Fig. 5, in the cam-plate, the edges or side walls of which are sufficiently steep to retain the oar in either of these positions 5 but if the oar is in position for 5o use the arms b b drop into comparatively shallow recesses d, Figs. 1, 2, and 5, which do not interfere with the motions of thc oar in rowing.

In the upper end ot' the thole or lug pin is formed an eye, e, which forms the bearing for the rounded end of a stem,f, projecting from the oarsupport F, said end being tted into the eye so thatit can freely turn therein without being permitted to drop out.

The oar-support consists ot' a strap, g, which is tirmly secured to the stem f, and bent as 6o shown in Fig.2, and with this strap is combined a cap, h, being connected to the same by ahin gejoint, so that it can be thrown back for the introduction of the oar. The outer end of the cap is provided with a projectiomt', which when 65 the cap is turned down, engages with a slot, j, Fig. 4, in the outer end ot' the strap g, and in this position the cap is retained by a springstop, lf, which is fitted into a socket (see Fig.

4) secured to the strap g. When this stop is 7o depressed the cap h can be swung open and the oar can be taken out of or introduced into its support. The spring-stop is depressed by means of a finger-piece, l, secured to its lower end. g 7 The p ole I of the oar is round to tit the support F, and on said pole are firmly secured two rings or stops, m, at a suitable distance apart,

so that the oar can turn and also slide in its support a sufficientdistance for its convenient 8o operation, while said rin g-stops preventthe oar. from sliding through its support beyond the required limits.

Heretofore the thole-pin of a rowlock has been provided at its lower end with a circular 8 5 recess engaged by the square end of a pivoted swinging spring-latch, but such does not constitute my invention, andis not claimed by me.

In my invention I employ a longitudinallysliding bolt, arranged within and guided by a 9o longitudinal recess in the bracket, and the inner end of the bolt is bifurcated, so as to embrace both sides of the grooved thole-pin, thereby providing a very secure but-simple retaining device.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a rowlock, a bracket, B, having in its under portion a guide-recess, in which is con- 4incd a longitudinally-sliding bolt, l), having roo a bifurcated inner end, as described7 in combicam-plate, which is acted on by the laterallynation with the thole or lug pin C, having at extending arms.

its lower end the circular groove, a., which is In testimony whereof I have hereunto set embraced by the bifurcated end of the slidemy hand and seal in the presence of two subg bolt, substantially as described. scribing witnesses.,

2. The combination substantially as hereinbefore described, of the thole or lug` pin7 arms JOSEPH W' NORCROSS' [L S] extending laterally from the thole or lug pin, Witnesses: a swiveling support for the oar extending from W. HAUFF, the upper part of the thole or lug pin7 and a E. F. KASTENHUBER. 

